Through the destruction of the doltish ego, the triputis that based on it fade away and end, along with Sakala (the waking and dream states). The Pure (Suddha) state of daylight that then shines for ever is Sivaratri (the night of Siva.)

Sakala which comprises the waking and dream states, alternates with Kevala, sleep. However, the three are actually states of the mind or the ego, not of the Self. In Sakala, the mind creates the states of waking and dream. Kevala is its state of dormancy in which it remains unaware of itself, the body or the world. When the ego dies, Sakala and Kevala both disappear, leaving the state of illumination that is referred to in the verse.

The daylight that shines in the night of Siva is a metaphor that indicates waking sleep, the state in which there is luminous and continuous Self awareness, even in apparent darkness of physical sleep.

Muruganar continues this theme in Verse 460, where he speaks about Vasanas.

If the beginningless, impure Vasanas that remain as the cause of waking and dream leave and perish, the state of sleep (previously perceived as) void-like and dull, and which led us into a state of ignorance and suffering, will become the transcendent state of Turiya.